If element X has 31 protons, how many electrons does it have?

Batteries are made of two metals with different electron affinities. What does the phrase "electron affinity" mean and how does this affinity affect the voltage of the battery?

If an object is in equilibrium,

Most of the bright stars in our galaxy are located in the galactic

When describing how power and work are similar you would want to mention that?

What dating technique could scientists use to find the age of a meteorite?

The first hominine in the genus Homo was named Homo habilis because evidence indicates that members of the species used

Planets move around the sun in elliptical orbits. A. true B. false

A 113 kg man sits on the stern of a 6.3 m long boat. The prow of the boat touches the pier, but the boat isn't tied. The man notices his mistake, stands up and walks to the boat's prow, but by the time he reaches the prow, it's moved 3.

What os the term for the smallest bit into which chemical substance can be divided and still have the properties of that substance A : eletron B:molecule c:atom D:ion

How many excess electrons must be present on each sphere if the magnitude of the force of repulsion between them is 4.57*10-21 newtons?